831291740423 has 4 divisors (see below), whose sum is σ = 851567148768. Its totient is φ = 811016332080.

The previous prime is 831291740413. The next prime is 831291740443. The reversal of 831291740423 is 324047192138.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 831291740423 - 2²² = 831287546119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831291740413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10137704111 + ... + 10137704192.

It is an arithmetic number, because the mean of its divisors is an integer number (212891787192).

Almost surely, 2^831291740423 is an apocalyptic number.

831291740423 is a deficient number, since it is larger than the sum of its proper divisors (20275408345).

831291740423 is a wasteful number, since it uses less digits than its factorization.

831291740423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20275408344.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 831291740423 in words is "eight hundred thirty-one billion, two hundred ninety-one million, seven hundred forty thousand, four hundred twenty-three".